EP0857045B1 - Aufblasbare decke mit konturen - Google Patents

Aufblasbare decke mit konturen Download PDF

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Publication number
EP0857045B1
EP0857045B1 EP96934161A EP96934161A EP0857045B1 EP 0857045 B1 EP0857045 B1 EP 0857045B1 EP 96934161 A EP96934161 A EP 96934161A EP 96934161 A EP96934161 A EP 96934161A EP 0857045 B1 EP0857045 B1 EP 0857045B1
Authority
EP
European Patent Office
Prior art keywords
blanket
spot welds
head end
welds
distance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96934161A
Other languages
English (en)
French (fr)
Other versions
EP0857045A1 (de
Inventor
Thomas F. Kappel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mallinckrodt Inc
Original Assignee
Mallinckrodt Medical Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mallinckrodt Medical Inc filed Critical Mallinckrodt Medical Inc
Publication of EP0857045A1 publication Critical patent/EP0857045A1/de
Application granted granted Critical
Publication of EP0857045B1 publication Critical patent/EP0857045B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/0097—Blankets with active heating or cooling sources
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G9/00—Bed-covers; Counterpanes; Travelling rugs; Sleeping rugs; Sleeping bags; Pillows
    • A47G9/02—Bed linen; Blankets; Counterpanes
    • A47G9/0207—Blankets; Duvets
    • A47G9/0215—Blankets; Duvets with cooling or heating means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F2007/0059—Heating or cooling appliances for medical or therapeutic treatment of the human body with an open fluid circuit
    • A61F2007/006—Heating or cooling appliances for medical or therapeutic treatment of the human body with an open fluid circuit of gas
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/02—Compresses or poultices for effecting heating or cooling
    • A61F2007/0268—Compresses or poultices for effecting heating or cooling having a plurality of compartments being filled with a heat carrier
    • A61F2007/0273—Compresses or poultices for effecting heating or cooling having a plurality of compartments being filled with a heat carrier with openings in the walls between the compartments serving as passageways for the filler
    • A61F2007/0274—Compresses or poultices for effecting heating or cooling having a plurality of compartments being filled with a heat carrier with openings in the walls between the compartments serving as passageways for the filler the walls being reduced to spot connections, e.g. spot welds

Definitions

  • hypothermia is a condition of subnormal body temperature and presents serious consequences to the patient suffering therefrom. It has been shown that nearly seventy five percent of all patients who undergo surgical procedures develop hypothermia. This equates to approximately fourteen million patients a year in the United States alone. The hypothermic condition is brought on by many factors including anesthesia, the air conditioning of the operating room, and the infusion of cold blood, I-V solutions, or irrigating fluids.
  • U.S. Patent 2,512,559 to Williams also relates to a blanket for providing cooled air to a person.
  • the blanket in Williams comprised a plurality of thin sheets of material connected together at a plurality of discrete locations and connected together in a continuous line about the peripheral edge.
  • An air inlet was provided to communicate with space between the sheets to allow cool air to be supplied thereto.
  • the blanket in Augustine, et al. comprises a plurality of inflatable hollow tubes having their interiors connected together through transverse openings.
  • An entry port is provided in the upper surface of the blanket for admitting the cool or warm air and small exit ports are provided through the lower surface to allow the cool or warm air to flow out toward a body covered by the blanket.
  • US 5,265,599 discloses an inflatable blanket wherein the distance between spot welds is larger along passages and smaller between spot welds and otherwise uniform, thus providing a contoured inflation profile.
  • the problem to be solved by the present invention is to provide a blanket for a forced air convection system, which is contoured to fit the body of a patient.
  • a solution of the above mentioned problem is achieved by providing a blanket for a forced air convective system, having an upper material layer and a lower material layer connected together at a plurality of spot welds, wherein the density of said spot welds is varied in certain areas of said blanket to provide a contoured inflation profile, characterized in that said spot welds having a pattern selected from the group consisting of:
  • Fig. 1 is a plan view of a blanket for a forced air convection system according to one embodiment of the present invention.
  • Fig. 2A is a crossed-sectional view of a portion of a blanket according to the present invention in a non-inflated state, showing welds spaced relatively far apart.
  • Fig. 2B is a cross-sectional view of the blanket shown in Fig. 2A, shown in an inflated state.
  • Fig. 3A is a cross-sectional view of a portion of a blanket according to the present invention in a non-inflated state, showing welds are spaced relatively close together.
  • Fig. 3B is a cross-sectional view of the blanket shown in Fig. 3A, shown in an inflated state.
  • Fig. 4 is a plan view of a blanket for a forced air convection system according to a further embodiment of the present invention.
  • Fig. 1 is a plan view of a blanket, generally designated by reference numeral 10, for a forced air convection system, according to one embodiment of the present invention.
  • blanket 10 includes a head end 20, a foot end 30, and sides 40A, 40B.
  • Blanket 10 further comprises a lower sheet of material (not visible), and an upper sheet of material 50, which are sealed together around respective peripheral edges to form an inflatable cavity therebetween.
  • the lower sheet and upper sheet 50 are further sealed together at a plurality of spot welds 60, which produce a quilt-like pattern upon inflation of the blanket.
  • the blanket 10 includes at least one inlet port 70, for attachment to a source of forced air which will be used to inflate the blanket 10, and provide either warming or cooling air to the patient.
  • the inlet port 70 is formed through the surfaces of the blanket 10, at an interior location spaced away from the edges of the blanket 10.
  • the inlet port may be formed at a corner of the blanket 10, or along any edge of the blanket 10.
  • multiple inlets may be provided for greater versatility to the user.
  • the lower sheet of the blanket 10, preferably has a plurality of perforations or small exit holes formed therethrough which allow air to escape from the blanket 10, toward a patient.
  • the welds 60 are provided in a pattern of varying density.
  • the welds 60 are provided more densely toward the head end 20, of the blanket 10.
  • the blanket 10 is provided with a contoured profile, wherein the blanket 10, will have a thinner profile upon inflation in those areas where the welds 60, are more densely provided.
  • Fig. 2A is a cross-sectional view of a portion of a blanket in a non-inflated state wherein the welds 60, are spaced relatively far apart.
  • Fig. 2A shows the upper sheet 50, the lower sheet 80, and two welds 60.
  • Fig. 2B is a cross-sectional view of the blanket shown in Fig. 2A, but now shown in an inflated state.
  • the inflated profile of the blanket is at maximum thickness.
  • Fig. 3A is a cross-sectional view of a portion of a blanket in a non-inflated state wherein the welds 60, are spaced relatively close together.
  • Fig. 3A shows the upper sheet 50, the lower sheet 80, and three welds 60.
  • Fig. 3B is a cross-sectional view of the blanket shown in Fig. 3A, but now shown in an inflated state.
  • the upper sheet 50, and lower sheet 80 both balloon outward from the welds 60.
  • the inflated profile of the blanket is at a reduced thickness.
  • the inflated profile of the blanket in areas where welds are spaced close to each other is less than the inflated profile of the blanket where welds are spaced further apart. Therefore, by varying the distance between welds, and thus the density of the weld pattern, the contour of the blanket can be altered and controlled.
  • the welds 60 are spaced closer together at the head end 20, of the blanket 10.
  • the inflated profile of the blanket 10 is thinner in the head end 2u, which provides several advantages. For example, having a thinner blanket profile near the head end provides for less billowing around the head and face of the patient, which in turn provides the medical team with better viewing and access of the patient. Further, the blanket is more comfortable for the patient because it does not protrude into or over the face of the patient.
  • the blanket 10 is reduced in contour toward the head end 20, and is also provided with shoulder extensions 90, which can be tucked around and under the patient's shoulders, to help stabilize the blanket 10, during use.
  • the shoulder extensions 90 may be either inflatable or non-inflatable sections of the blanket 10, but in any case will have relatively densely packed welds 60, to facilitate their use.
  • the present invention also relates to any number of desired contour patterns which may be provided by varying the density pattern of the welds.
  • the blanket 10 may be contoured near the head end 20.
  • the blanket could be contoured near the foot end, or along the edges, or portions thereof. Further, the blanket could be provided with multiple contoured sections.
  • the present invention also relates to blankets having gradual or varying contours.
  • the inflated profile of the blanket can be controlled by varying the density pattern of the welds. The closer the welds, the thinner the inflated profile as demonstrated in Figs. 2 and 3.
  • a tapered contour can be achieved.
  • dips, or hollows can be formed across the surface of the blanket if so desired. If multiple contours are to be provided, such can be done in different patterns to achieve different inflation profiles in different areas of the blanket.
  • the distance between the welds in the longitudinal direction may be symmetrical with the distance between welds in the horizontal direction to provide a evenly contoured blanket. Conversely, the distance between welds in the longitudinal direction may be different than the distance between welds in the horizontal direction to provide a contour in only one direction, or to provide different contours in different directions.
  • the blanket shown in Fig. 1 represents full body blankets but the present invention would be equally applicable to blankets intended to cover only portions of the patient, such as an upper body blanket or a lower body blanket.
  • the blankets according to the present invention are also equally useful in both adult and pediatric sizes.
  • the blankets above may be used equally effectively in either the operating room, or in other areas of the hospital.
  • the blankets according to the present invention may be used to provide either warming or cooling to a patient.
  • the blankets of the present invention may be formed of any suitable material capable of being sealed together at selected positions and having sufficient strength to allow inflation and adequate air distribution within the inflated portion.
  • suitable materials include plastics, non-woven wood pulp compositions, laminated plastic and wood pulp materials, and combinations thereof.

Landscapes

  • Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Bedding Items (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)

Claims (9)

  1. Aufblasbare Decke (10) für ein Druckluft-Konvektionssystem, mit:
    einer oberen Lage (50) eines Materials einer allgemein rechtwinkligen Form mit einem Kopfende (20), einem Fußende (30) und zwei Seiten (40A, 40B);
    einer unteren Lage (80) eines Materials einer allgemein rechtwinkligen Form mit einem Kopfende (20), einem Fußende (30) und zwei Seiten (40A, 40B);
    wobei die obere Lage (50) und die untere Lage (80) um ihre Umfangskanten an ihren jeweiligen Kopfenden (20), Fußenden (30) und Seiten (40A, 40B) miteinander verschweißt sind, um eine aufblasbare Decke mit einem Hohlraum dazwischen mit einem Kopfende (20), einem Fußende (30) und zwei Seiten (40A, 40B) zu schaffen, bei die obere Lage und die untere Lage des Weiteren über ihre entsprechenden Oberflächen an einer Vielzahl Punktschweißungen (60) miteinander verschweißt sind;
    einer Aufblasöffnung (70), die den aufblasbaren Hohlraum mit der Atmosphäre verbindet, und durch den ein Aufblasmedium in den aufblasbaren Hohlraum eingeleitet werden kann, um die Decke aufzublasen;
    bei der die Dichte der Punktschweißungen (60) in bestimmten Bereichen der Decke (10) unterschiedlich ist, um ein konturiertes Aufblasprofil bereitzustellen, dadurch gekennzeichnet, daß die Punktschweißungen (60) ein Muster haben, das aus der Folgendes umfassenden Gruppe gewählt wird:
    ein Muster, bei dem der Abstand zwischen benachbarten Punktschweißungen (60) am Kopfende (20) der Decke (10) kleiner ist als der Abstand zwischen benachbarten Punktschweißungen (60) am Fußende (30) der Decke (10), so dass das Kopfende (20) der Decke (10) im aufgeblasenen Zustand ein dünneres Profil hat als das Fußende (30) der Decke (10); ein Muster, bei dem der Abstand zwischen benachbarten Punktschweißungen (60) am Fußende (30) der Decke (10) kleiner ist als der Abstand zwischen benachbarten Punktschweißungen (60) am Kopfende (20) der Decke (10), so dass das Fußende (30) der Decke (10) im aufgeblasenen Zustand ein dünneres Profil hat als das Kopfende (20) der Decke (10); und
    ein Muster, bei dem der Abstand zwischen benachbarten Punktschweißungen (60) an einer Seite (40A, 40B) der Decke (10) kleiner ist als der Abstand zwischen benachbarten Punktschweißungen (60) an der anderen Seite (40A, 40B) der Decke (10), so dass die eine Seite (40A, 40B) der Decke (10) im aufgeblasenen Zustand ein dünneres Profil hat als die andere Seite (40A, 40B) der Decke (10).
  2. Decke nach Anspruch 1, bei der die Punktschweißungen (60) am Kopfende (20) der Decke (10) dichter vorgesehen sind.
  3. Decke nach Anspruch 1, bei der die Punktschweißungen (60) am Fußende (30) der Decke (10) dichter vorgesehen sind.
  4. Decke nach Anspruch 1, bei der die Punktschweißungen (60) entlang einer Seite (40A, 40B) der Decke (10) dichter vorgesehen sind.
  5. Decke nach Anspruch 1, bei der die Punktschweißungen (60) in einem allmählich dichter werdenden Muster in Richtung einer Seite (40A, 40B) der Decke (10) vorgesehen sind.
  6. Decke nach Anspruch 5, bei der die Punktschweißungen (60) in einem allmählich dichter werdenden Muster in Richtung des Kopfendes (20) der Decke (10) vorgesehen sind.
  7. Decke nach Anspruch 1, bei der die Dichte der Punktschweißungen (60) in Längsrichtung entlang der Decke (10) größer ist als in waagrechter Richtung entlang der Decke (10).
  8. Decke nach Anspruch 1, bei der die Dichte der Punktschweißungen (60) in waagrechter Richtung entlang der Decke (10) größer ist als in Längsrichtung entlang der Decke (10).
  9. Decke nach Anspruch 1, bei der die Decke (10) des Weiteren Schulterverlängerungen (90) enthält, die am Kopfende (20) herausragen, die bei Verwendung der Decke (10) unter die Schultern eines Patienten geschoben werden können.
EP96934161A 1995-10-18 1996-10-11 Aufblasbare decke mit konturen Expired - Lifetime EP0857045B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/544,906 US5640727A (en) 1995-10-18 1995-10-18 Contoured inflatable blanket
US544906 1995-10-18
PCT/US1996/016321 WO1997014379A1 (en) 1995-10-18 1996-10-11 Contoured inflatable blanket

Publications (2)

Publication Number Publication Date
EP0857045A1 EP0857045A1 (de) 1998-08-12
EP0857045B1 true EP0857045B1 (de) 2001-09-26

Family

ID=24174078

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96934161A Expired - Lifetime EP0857045B1 (de) 1995-10-18 1996-10-11 Aufblasbare decke mit konturen

Country Status (7)

Country Link
US (1) US5640727A (de)
EP (1) EP0857045B1 (de)
JP (1) JP3831412B2 (de)
AT (1) ATE206034T1 (de)
CA (1) CA2233663C (de)
DE (1) DE69615575T2 (de)
WO (1) WO1997014379A1 (de)

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JP3704352B2 (ja) * 1994-07-25 2005-10-12 マリンクロッド・インコーポレイテッド 気流偏向装置を備えた膨張可能な毛布
US5443488A (en) * 1994-08-15 1995-08-22 Progressive Dynamics, Inc. Thermal blanket with surgical access

Also Published As

Publication number Publication date
ATE206034T1 (de) 2001-10-15
CA2233663A1 (en) 1997-04-24
DE69615575T2 (de) 2003-01-02
WO1997014379A1 (en) 1997-04-24
DE69615575D1 (de) 2001-10-31
JPH11513588A (ja) 1999-11-24
US5640727A (en) 1997-06-24
JP3831412B2 (ja) 2006-10-11
CA2233663C (en) 2003-01-28
EP0857045A1 (de) 1998-08-12

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